#main {
  height: 100%;
  /* padding: 0 20px; */
}
.search {
  display: flex;
  height: 55px;
  border-bottom: 1px solid #f2f2f2;
  justify-content: flex-end;
  align-items: center;
}
.search span {
  display: inline-block;
  width: 200px;
  margin-right: 8px;
}
.search input,.select {
  background-color: #fff;
  background-image: none;
  border-radius: 4px;
  border: 1px solid #dcdfe6;
  box-sizing: border-box;
  color: #606266;
  display: inline-block;
  font-size: inherit;
  height: 30px;
  line-height: 30px;
  outline: none;
  padding: 0 15px;
  transition: border-color .2s cubic-bezier(.645,.045,.355,1);
  width: 100%;
}
#inputValue::placeholder {  
   color: #dcdfe6;
 }
.select .option {
  display: inline-block;
  font-size: 14px;
  padding: 10px 20px !important;
  position: relative;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: #606266;
  height: 34px;
  line-height: 34px;
  box-sizing: border-box;
  cursor: pointer;
}
.search .searchBtn {
  display: inline-block;
  width: 75px;
  text-align: center;
  line-height: 30px;
  height: 30px;
  background-color: #fff;
  color: #aaa;
  border: 1px solid #dcdfe6;
  cursor: pointer;
  font-size: 14px;
  border-radius: 3px;
}
.content {
  height: calc(100% - 55px);
  overflow: auto;
  padding: 20px 0 20px 20px;
}
.courseType {
  width: 20%;
  margin: 0 20px 15px;
  border: 1px solid #f2f2f2;
  border-radius: 8px; 
  padding-bottom: 8px;
}
.courseImg {
  position: relative;
  height: 140px;
}
.label {
  width: 100%;
  padding: 0 13px;
  display: flex;
  justify-content: space-between;
  position: absolute;
  left: 0;
  bottom: 0;
  background: rgba(0,0,0,.4);
  height: 33px;
  line-height: 33px;
  color: #FFFFFF;
}
.courseImg .course_img {
  width: 100%;
  height: 140px;
  border-radius: 8px 8px 0px 0px;
}
.collectTag {
  position: absolute;
  top: 0;
  right: 25px;
}
.courseName,.introduction,.courseTag {
  padding: 10px 10px 0;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  cursor: pointer;
}
.courseName {
  font-size: 16px;
  font-weight: bold;
}
.courseTag {
  font-size: 12px;
  display: flex;
  justify-content: space-between;
}
.introduction {
  font-size: 12px;
}
.tag {
  color: #409EFF;
}